How can I pass a list as a command-line argument with argparse?
I am trying to pass a list as an argument to a command line program. Is there an argparse option to pass a list as option? parser.add_argument ('-l', '--list', type=list, acti...
What is parsing in terms that a new programmer would understand?
May 29, 2010 · A parser for that language would accept AABB input and reject the AAAB input. That is what a parser does. In addition, during this process a data structure could be created …
c# - What is parsing? - Stack Overflow
Jun 5, 2015 · A parser is a compiler / interpreter component that breaks data into smaller elements for easy translation into another language. A parser takes input in the form of a …
parsing - lexers vs parsers - Stack Overflow
Are lexers and parsers really that different in theory? It seems fashionable to hate regular expressions: coding horror, another blog post. However, popular lexing based tools: …
What is HTTP Parser, where it is used, what does it do
Mar 6, 2015 · HTTP is a (primarily) text based (i.e. - human readable) protocol. As such a computer program needs to interpret the text according to HTTP's syntax to extract its …
Whatever happened to package 'parser' in Python 3.10?
Aug 12, 2022 · parser has been deprecated and was removed in Python 3.10. From the v3.9 release notes: Python 3.9 uses a new parser, based on PEG instead of LL (1). The new …
Python argparse command line flags without arguments
How do I add an optional flag to my command line args? eg. so I can write python myprog.py or python myprog.py -w I tried parser.add_argument('-w') But I just get an ...
parsing - How to write a Parser in C#? - Stack Overflow
Sep 11, 2011 · How do I go about writing a Parser (Recursive Descent?) in C#? For now I just want a simple parser that parses arithmetic expressions (and reads variables?). Though later I …
What's the difference between a parser and a scanner?
Nov 15, 2009 · A parser converts this list of tokens into a Tree-like object to represent how the tokens fit together to form a cohesive whole (sometimes referred to as a sentence).
Argparse: Required arguments listed under "optional arguments"?
Parameters starting with - or -- are usually considered optional. All other parameters are positional parameters and as such required by design (like positional function arguments). It is possible …